Archived posting to the Leica Users Group, 2009/05/17

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Subject: [Leica] D-LUX4: the straight truth!
From: shino at (Rei Shinozuka)
Date: Sun, 17 May 2009 22:11:29 -0400

i'd heard about the Leica software correction logic in the 
D-LUX4, where the screen and JPGs and included software correct
for distortion.  out of curiosity, i used an open-source raw converter 
(libraw) rather than the bundled software to see what actually comes out 
of the camera.

i shot images with camera set to store both jpg and raw, then
converted the RAW (RWL) without the bundled software.

in the RWL, the barrel distortion is clearly visible (ignore the other
sharpness and contrast settings, i didn't try to make an exact
match between RWL and JPG.  the raw is also a little more loosely 
that some writing is visible on the bus at the extreme left on
the RWL-derived image, and not on the jpg.  from what i've read,
the software correction may do other enhancements, but i haven't
found these as apparent as the barrel correction.

direct jpg from camera: at N00/3541195208/

rwl (RAW) converted: at N00/3541196214/


Rei Shinozuka shino at
Ridgewood, New Jersey

Replies: Reply from philippe.amard at (Philippe AMARD) ([Leica] D-LUX4: the straight truth!)
Reply from s.dimitrov at (Slobodan Dimitrov) ([Leica] D-LUX4: the straight truth!)